Assignee
SCHRAMM INC
US·8 granted patents·267 citations·filing 1974–2014
Top patents by PatentIndex Score
8 records- 0189US7350593B1Electronically controlled earth drilling rigSCHRAMM INC·Filed 2006·Granted Apr 1, 2008·61 cites·17 claims
- 0280US7503409B2Earth drilling rig having electronically controlled air compressorSCHRAMM INC·Filed 2006·Granted Mar 17, 2009·29 cites·10 claims
- 0378US5941324ADrilling apparatusSCHRAMM INC·Filed 1998·Granted Aug 24, 1999·106 cites·5 claims
- 0470US4048072AAir diffusersSCHRAMM INC·Filed 1975·Granted Sep 13, 1977·41 cites·24 claims
- 0559USD477332SEarth drillSCHRAMM INC·Filed 2002·Granted Jul 15, 2003·13 cites·1 claims
- 0653US9551193B2Drill pipe handling apparatus having improved pipe gripping mechanismSCHRAMM INC·Filed 2014·Granted Jan 24, 2017·3 cites·8 claims
- 0746US4277341AWater treatment discharge meansSCHRAMM INC·Filed 1979·Granted Jul 7, 1981·14 cites·18 claims
- 0816US3966854AAir trapSCHRAMM INC·Filed 1974·Granted Jun 29, 1976·0 cites·5 claims
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